Evidence map›Paper›PMID 26448868›Full record

ArticleBMC obesity2015

Relationships between mitochondrial content and bioenergetics with obesity, body composition and fat distribution in healthy older adults.

Manish S Bharadwaj, Daniel J Tyrrell, Iris Leng, Jamehl L Demons, Mary F Lyles, J Jeffrey Carr, Barbara J Nicklas, Anthony J A Molina

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in BMC obesity, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01049698 (Improving Muscle for Functional Independence Trial), which is not on this map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.2field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01049698 nacompletednot on this map

Improving Muscle for Functional Independence Trial

TypeinterventionalSponsorWake Forest UniversityRan2010 to 2014Enrolled126ConditionsObesityArmsResistance Training, Resistance Training + Diet
3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 39 citations in OpenAlex.

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  7. Increased adiposity is associated with altered skeletal muscle energetics.Journal of applied physiology (Bethesda, Md. : 1985) · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 1 country.

Manish S BharadwajSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Daniel J TyrrellSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Iris LengDepartment of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Jamehl L DemonsSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Mary F LylesSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
J Jeffrey CarrDepartment of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37203 USA.
Barbara J NicklasSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Anthony J A MolinaSticht Center on Aging & Department of Internal Medicine, Section on Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC 27157 USA.
Wake Forest University · USVanderbilt University Medical Center · US

Funding

Wake Forest Claude D. Pepper OAIC - RenewalP30AG021332 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Jamie Nicole Justice · 2002 to 2026
$36.4M
Loss of fat tissue and functional responses to exercise in older, obese adultsR01AG020583 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI NICKLAS, BARBARA J · 2002 to 2013
$4.0M
NIA NIH HHS P30 AG021332NIA NIH HHS R01 AG020583
6 · The paper itself

Abstract

backgroundMitochondrial function declines with age; however, the relationship between adiposity and mitochondrial function among older adults is unclear. This study examined relationships between skeletal muscle mitochondrial content and electron transport chain complex 2 driven respiration with whole body and thigh composition, body fat distribution, and insulin sensitivity in older adults.

methods25 healthy, sedentary, weight-stable men (N = 13) and women (N = 12) >65 years of age, with a BMI range of 18-35 kg/m(2), participated in this study. Vastus lateralis biopsies were analyzed for citrate synthase (CS) activity and succinate mediated respiration of isolated mitochondria. Whole body and thigh composition were measured by DXA and CT. HOMA-IR was calculated using fasting glucose and insulin as an estimate of insulin sensitivity.

resultsSimilar to reports in middle-aged adults, skeletal muscle CS activity was negatively correlated with BMI (R = -0.43) in our cohort of older adults. Higher total and thigh adiposity were correlated with lower CS activity independent of BMI (R = -0.50 and -0.71 respectively). Maximal complex 2 driven mitochondrial respiration was negatively correlated with lower body adiposity in males (R = -0.66). In this cohort of non-diabetic older adults, both HOMA-IR and insulin were positively correlated with CS activity when controlling for BMI (R = 0.57 and 0.66 respectively).

conclusionsAdiposity and body composition are correlated with skeletal muscle mitochondrial content and electron transport chain function in healthy, sedentary, community dwelling, older adults. Specific relationships of mitochondrial bioenergetics with gender and insulin sensitivity are also apparent.

trial registrationClinicalTrials.gov identifier NCT01049698.

Indexed as

AdiposityAgingMitochondriaMuscleObesity

Identifiers

PMID26448868
PMCPMC4594906
OpenAlexW2126146967

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.